| mountain beaver | (n) bulky nocturnal burrowing rodent of uplands of the Pacific coast of North America; the most primitive living rodent, Syn. sewellel, Aplodontia rufa |
| 山ビーバー | [やまビーバー;ヤマビーバー, yama bi-ba-; yamabi-ba-] (n) (uk) mountain beaver (Aplodontia rufa) [Add to Longdo] |